I actually got frustrated enough with this a few weeks ago to write a quick extension that lets me jump between comment trees: https://github.com/mpwoz/jumper

I actually got frustrated enough with this a few weeks ago to write a quick extension that lets me jump between comment trees: https://github.com/mpwoz/jumper https://github.com/mpwoz/jumper It's very lightweight and doesn't clutter up your screen with an icon since that's literally the only use case. I haven't gotten around to publishing it on the web store yet unfortunately so you'll have to install manually.